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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ShadowRoot_h
#define ShadowRoot_h
#include "ContainerNode.h"
#include "Document.h"
#include "DocumentFragment.h"
#include "Element.h"
#include "ExceptionCode.h"
#include "TreeScope.h"
namespace WebCore {
class AuthorStyleSheets;
class HTMLSlotElement;
class SlotAssignment;
class ShadowRoot final : public DocumentFragment, public TreeScope {
public:
enum class Type : uint8_t {
UserAgent = 0,
Closed,
Open,
};
static Ref<ShadowRoot> create(Document& document, Type type)
{
return adoptRef(*new ShadowRoot(document, type));
}
#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
static Ref<ShadowRoot> create(Document& document, std::unique_ptr<SlotAssignment>&& assignment)
{
return adoptRef(*new ShadowRoot(document, WTFMove(assignment)));
}
#endif
virtual ~ShadowRoot();
StyleResolver& styleResolver();
AuthorStyleSheets& authorStyleSheets();
void updateStyle();
void resetStyleResolver();
bool resetStyleInheritance() const { return m_resetStyleInheritance; }
void setResetStyleInheritance(bool);
Element* host() const { return m_host; }
void setHost(Element* host) { m_host = host; }
String innerHTML() const;
void setInnerHTML(const String&, ExceptionCode&);
Element* activeElement() const;
Type type() const { return m_type; }
virtual void removeAllEventListeners() override;
#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
HTMLSlotElement* findAssignedSlot(const Node&);
void addSlotElementByName(const AtomicString&, HTMLSlotElement&);
void removeSlotElementByName(const AtomicString&, HTMLSlotElement&);
void invalidateSlotAssignments();
void invalidateDefaultSlotAssignments();
const Vector<Node*>* assignedNodesForSlot(const HTMLSlotElement&);
#endif
protected:
ShadowRoot(Document&, Type);
#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
ShadowRoot(Document&, std::unique_ptr<SlotAssignment>&&);
#endif
// FIXME: This shouldn't happen. https://bugs.webkit.org/show_bug.cgi?id=88834
bool isOrphan() const { return !m_host; }
private:
virtual bool childTypeAllowed(NodeType) const override;
virtual Ref<Node> cloneNodeInternal(Document&, CloningOperation) override;
bool m_resetStyleInheritance { false };
Type m_type { Type::UserAgent };
Element* m_host { nullptr };
std::unique_ptr<StyleResolver> m_styleResolver;
std::unique_ptr<AuthorStyleSheets> m_authorStyleSheets;
#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
std::unique_ptr<SlotAssignment> m_slotAssignment;
#endif
};
inline Element* ShadowRoot::activeElement() const
{
return treeScope().focusedElement();
}
inline ShadowRoot* Node::shadowRoot() const
{
if (!is<Element>(*this))
return nullptr;
return downcast<Element>(*this).shadowRoot();
}
inline ContainerNode* Node::parentOrShadowHostNode() const
{
ASSERT(isMainThreadOrGCThread());
if (is<ShadowRoot>(*this))
return downcast<ShadowRoot>(*this).host();
return parentNode();
}
inline bool hasShadowRootParent(const Node& node)
{
return node.parentNode() && node.parentNode()->isShadowRoot();
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ShadowRoot)
static bool isType(const WebCore::Node& node) { return node.isShadowRoot(); }
SPECIALIZE_TYPE_TRAITS_END()
#endif
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